FURPS

FURPS is an acronym representing a model for classifying software quality attributes (functional and non-functional requirements): FURPS is an acronym representing a model for classifying software quality attributes (functional and non-functional requirements): The model, developed at Hewlett-Packard was first publicly elaborated by Grady and Caswell. FURPS+ is now widely used in the software industry. The + was later added to the model after various campaigns at HP to extend the acronym to emphasize various attributes.